JPH01273502A - Rotary tiller - Google Patents

Abstract

PURPOSE:To always accommodate the rear part of an elastic plate inside an accommodating box body by equipping a rear part cover covering the rear part of tillage tines with an accommodating box body capable of slidably accommodating the rear part of the elastic plate plugging an opening part of the rear part of a transmission case. CONSTITUTION:The front part of an elastic plate 7 is attached to a transmission case 3 and the rear part of the elastic plate 7 is accommodated into an accommodating box body 8 equipped to a rear part cover 6. Even in case of rotating a tiller cover 5, a rear part cover 6 and an accommodating box body 8 front or back against the transmission case 3 and the elastic plate 7, the accommodating box body 8 maintains the accommodating state of the rear part of the elastic plate to prevent the rear part of the elastic plate from projecting.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a rotary tiller.

PRIOR ART AND PROBLEMS TO BE SOLVED BY THE INVENTION A tiller has a pair of left and right tiller shafts on its lower end, into which tiller blades are implanted,
A tilling cover that has a notch through which the transmission case is inserted and covers the upper part of the tilling blade is provided in a transmission case containing a transmission mechanism that transmits power to the tilling shaft, and is rotatable back and forth, and the rear end of this tilling cover In a rotary tiller in which a rear cover that covers the rear of the tiller blade is pivoted so as to be movable up and down, in order to prevent the tilled soil from scattering from the notch of the tiller cover, there is a A closing plate that closes the notch from above is provided so as to be able to come into sliding contact with the tilling cover.1 For example, when the tilling cover is rotated forward relative to the transmission case, it is attached to the transmission case as the tilling cover is rotated forward. Since the cover plate protrudes from the rear end of the tilling cover, this protrusion is likely to come into contact with the human body, and therefore there is a risk of danger.

Means for Solving the Problems This invention provides a power transmission case (3) having a pair of left and right cultivation shafts (21+21) with a tilling blade fil (1) installed at the lower end and a power transmission mechanism inside. The tilling blade has a notch (4) through which the transmission case (3) is inserted.
A tilling cover (5) that covers the upper part is provided so as to be rotatable back and forth, and covers the rear of the tilling blade (11 (1)...) pivotally attached to the rear end of the tilling cover (5). Rear cover (6)
The rotary tiller is provided with a housing box body (8) that can slidably house an elastic plate [7] that closes the notch (4) provided at the rear of the transmission case (3). The configuration of the device.

Function of the invention The transmission mechanism in the transmission case (3) is the tilling shaft (2) (2
1 to the tilling blades (1) (1)..., and the upwardly thrown soil generated by the tilling action of the tilling blades (1) (1)... is transferred to the tilling cover (5) and the notch. The elastic plate (7) in (4) prevents soil from scattering, and the rear cover (6) prevents the soil from being thrown backwards.

In addition, an elastic plate (7) whose front end is attached to the transmission case (3) and whose rear end is housed in the storage box body (8) is adapted to the vertical movement of the rear cover (6) and the storage box body (8). It follows while bending.

In order to correct the grounding condition of the lower end of the rear cover (6), move the tilling cover (5), rear cover (6) and storage box body (8) forward with respect to the transmission case (3) and elastic plate (7). Or even if it is rotated backwards, the storage box body (8) will not be able to hold the elastic plate (7).
Maintain rear containment.

Effects of the Invention In this way, the rear part of the elastic plate (7) is always connected to the storage box body (8).
), the rear protruding portion of the closing plate does not come into contact with the human body, as in the problem described above, and is therefore less likely to pose a danger.

Embodiment In addition, when rotating, a pair of left and right tilling shafts (21
+21, a transmission case (3) incorporating a transmission mechanism for transmitting power to these tilling shafts f2) (21) is provided, and the tilling shafts (2) (21 are equipped with an appropriate number of tilling blades (11 (1) )
A pair of left and right pipe-shaped support rods (1υ) protruding left and right are installed on the top of the transmission case (3).

The support rod (1υ
A support member (lj) having a pair of support shafts (<1i5+12) is connected to each other.

On the outside of these support members (13) (131, there is a rotation guide (14J) having a long hole (14J) through which the support shaft a'a av can be inserted and which can be rotated back and forth around the tilling shaft (2). 1';l (19 are provided respectively, and these rotation guides (1
9 (+9) Front and rear mounting members f151 (161I■(■η) are connected by bolts to the front and rear ends of +9, and can be rotated back and forth by inserting the transmission case (3) into the center in the left and right direction. Attach the tilling cover (5) having a notch (4),
A rear cover (6) that covers the rear of the tilling blade fl) (1) is provided on the left-right support shaft provided at the rear end of the tilling cover (5) so as to be movable up and down. .

A pair of left and right sliding guides +1'J (IcS) having vertical sliding holes are provided on the rear surface of the transmission case (3).

In the sliding holes of these sliding guides (191fl'l), there are a pair of left and right sliding rods G having left and right support shafts 2 [) at the lower ends.
! +1 <211 is slidably inserted, and the support shaft (to)
At both left and right ends of.

A mounting plate Q having an insertion part that passes through this support shaft is provided so as to be movable up and down, and the notch part (4) of the tilling cover (5) is attached to the bottom of this mounting plate Q3 from above. Elastic plate to close (
7) Attach the front end.

In addition, near the rear end of the tillage cover (5), there is an elastic plate (7).
) is provided in sliding contact with the top surface of the tilling cover (5), and a storage box body is provided in the front part of the rear cover (6) to slidably accommodate the rear part of the elastic plate (7). (8) shall be provided.

Furthermore, G! 41 is a link mast that is connected to the top link of the tractor, 4 is a connecting pin that is connected to the lower link, C2e is a handle that moves up and down the adjustment shaft that adjusts the plowing depth, and (5) is a rotation guide (+! 9 (151 is a rotating handle for rotating operation, 121 is a pressing rod that presses the rear cover (6) downward, Ql is a tilling blade (11 (1)
) is a side cover that covers the sides of...

Next, the effect will be explained. The soil thrown upwards due to the tilling action of the tilling blades +11 +11... rotating while being towed by a tractor is prevented from scattering by the tilling cover (5) and the elastic plate (7) of the notch (4). The soil thrown to the rear is prevented from scattering by the rear cover (6), and the surface is leveled at the lower end of the rear cover (6).

When the rotation handle (5) is rotated in one direction or the other, the rotation guide (+9
(151 is the mounting member (16) (le (+71 f
The tilling cover (5), the rear cover (6), and the storage box body (8) are rotated forward or backward through the force, and at this time, the elastic plate (7) is moved toward the tilling cover (5) by the roller j. At the same time, the rear part of the elastic plate (7) is kept housed in the storage box body (8), and the tilling cover (5) is moved up and down with respect to the transmission case (3). Following this vertical movement, the elastic plate (7), the mounting plate (23) and the sliding rod G! maintains sliding contact with the tillage cover (5).

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which FIG. 1 is a perspective view, FIG. 2 is a partial side view, and FIG. 3 is a sectional view afterward. In the figure, (1) is the tilling blade, (2) is the tilling shaft, (3) is the transmission case, (4) is the notch, (5) is the tilling cover, (
6) is a rear cover, (7) is an elastic plate, and (8) is a storage box.

Claims (1)

[Claims] The lower end has tilling blades (1) (1)...a pair of planted right and left tilling shafts (2) (2), and a transmission case with a transmission mechanism inside (
3), there is a notch (4) into which this transmission case (3) is inserted.
) and covers the top of the tilling blades (1) (1)... is provided so as to be rotatable back and forth, and this tilling cover (5)
) The rear cover (6) that covers the rear of the tilling blades (1) (1) pivotally attached to the rear end of the transmission case (3) has the notch (4) provided at the rear of the transmission case (3). A rotary tiller comprising a housing box body (8) that can slidably accommodate the rear part of a closing elastic plate (7).